Collar(zinc) of Pneumatic plastic fitting

  The zinc collar of the plastic fitting can reinforce the sleeve and prevent it from falling off. In order to save costs, many manufacturers on the market use plastic collar to produce fittings and coat the surface of plastic collar with zinc, pretending to be zinc collar. But the plastic collar are not resistant to high pressure and are easy to break, so the life of the fittings manufactured with plastic collar is very short. The fitting produced by our company is made of zinc alloy material, which is high-pressure resistant, not easy to break, and has good quality, so that the service life of the plastic fitting is increased.